linux-kernel - Re: XFS assertion from truncate. (3.10-rc2)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20130522142252.GB1407@redhat.com>
Date:	Wed, 22 May 2013 10:22:52 -0400
From:	Dave Jones <davej@...hat.com>
To:	Dave Chinner <david@...morbit.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>, xfs@....sgi.com
Subject: Re: XFS assertion from truncate. (3.10-rc2)

On Wed, May 22, 2013 at 03:51:47PM +1000, Dave Chinner wrote:

 > > Tomorrow I'll also try running some older kernels with the same
 > > options to see if it's something new, or an older bug. This is a
 > > new machine, so it may be something that's been around for a
 > > while, and for whatever reason, my other machines don't hit
 > > this.
 > 
 > Another thing that just occurred to me - what compiler are you
 > using?  We had a report last week on #xfs that xfsdump was failing
 > with bad checksums because of link time optimisation (LTO) in
 > gcc-4.8.0. When they turned that off, everything worked fine. So if
 > you are using 4.8.0, perhaps trying a different compiler might be a
 > good idea, too.

Yeah, this is 4.8.0. This box is running F19-beta. 
I managed to shoehorn the gcc-4.7 from f18 on there though.
Bug reproduced instantly, so I think we can rule out compiler.

I ran 3.9 with the same debug options. Seems stable.
I'll do a bisect.

	Dave

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/